1916 Washington (3-0-1)
1917 Washington (3-0)
1918 California (3-0)
1919 Oregon (2-1), Washington (2-1)
1920 California (3-0)
1921 California (5-0)
1922 California (3-0)
1923 California (5-0)
1924 Stanford (3-0-1)
1925 Washington (5-0)
1926 Stanford (4-0)
1927 Southern California (4-0-1), Stanford (4-0-1)
1928 Southern California (4-0-1)
1929 Southern California (6-1)
1930 Washington State (6-0)
1931 Southern California (7-0)
1932 Southern California (6-0)
1933 Oregon (4-1), Stanford (4-1)
1934 Stanford (5-0)
1935 California (4-1), Stanford (4-1), UCLA (4-1)
1936 Washington (6-0-1)
1937 California (6-0-1)
1938 Southern California (6-1), California (6-1)
1939 Southern California (5-0-2), UCLA (5-0-3)
1940 Stanford (7-0)
1941 Oregon State (7-2)
1942 UCLA (6-1)
1943 Southern California (4-0)
1944 Southern California (3-0-2)
1945 Southern California (6-0)
1946 UCLA (7-0)
1947 Southern California (6-0)
1948 California (6-0), Oregon (6-0)
1949 California (7-0)
1950 California (5-0-1)
1951 Stanford (6-1)
1952 Southern California (6-0)
1953 UCLA (6-1)
1954 UCLA (6-0)
1955 UCLA (6-0)
1956 Oregon State (6-1-1)
1957 Oregon (6-2), Oregon State (6-2)
1958 California (6-1)